Minor modes with the minor scale and Major with Major.
Minor scale modes;
Dorian mode, minor scale with a #6th.
Phrygian mode, minor scale with a b2nd.
Aeolian mode, natural minor scale (not altered).
Major scale modes;
Ionian mode, Major scale (not altered).
Lydian mode, Major scale with a #4th.
Mixolydian mode, Major scale with a b7th.
Notice how each gender share 1 unaltered mode, 1 # and 1 b on both sides.
Take these modes and put them in a parallel key. G Ionian, G Dorian, etc.....
Use G as a tonal center and play the modes with G as a base in your chord structure; G Maj, Gmin7, etc... the possibilities are endless.
Take a look at the Pitch Axis Theory thread and you'll see how they relate.
